氨苄西林 钠盐

作用方式：该ß-内酰胺抗生素通过灭活位于细菌的细胞膜内表面的转肽酶从而抑制细菌细胞壁合成。

耐药性机制：ß-内酰胺酶切开氨苄青霉素的ß-内酰胺环,使其失去活性。

抗菌谱：包括革兰氏阳性菌(类似青霉素)和革兰氏阴性菌(类似四环素和氯霉素)。

Ampicillin sodium salt has been used:
- to select for ampicillin resistance in mutated and transformed cells

High quality antibiotic suitable for mulitple research applications.

Ampicillin sodium salt is a member of the extended-spectrum β-lactam family and a semisynthetic derivative of penicillin that functions as a broad-spectrum antibiotic. It is a β-lactam antibiotic that inhibits bacterial cell-wall synthesis by binding to penicillin-binding proteins (PBPs), thereby inhibiting peptidoglycan synthesis, a critical component of the bacterial cell wall. Ampicillin sodium salt is active against a wide range of Gram-positive and Gram-negative bacteria, including E.coli, β-lactam-sensitive VRE, vancomycin-resistant Enterococcus species, Staphylococcus aureus, and Streptococcus pneumoniae. It is commonly used in research laboratories to study antibiotic resistance and penetration limitations, the synergy between multiple antibiotics, and the selection and maintenance of recombinant plasmids in E.coli.